GMS Offshore Contractor. Gulf Marine Services is one of the largest providers of self-propelled, self-elevating accommodation jackup barges in the world. Fleet: Jackup barges, AHTS.

HARKAND GROUP. Harkand offers fully integrated subsea services to the offshore Oil, Gas and Renewable Energy sectors, providing vessels, ROVs, diving, survey services and more.

Holyhead Towing Company Ltd. Fleet: Draft tugs & multicats, workboats, survey & transport vessels and crew boats .

Humber Work Boats Ltd. Fleet: Multicats, Work Boats, Light and Heavy lift Crane Barges.

Jenkins Marine. Fleet: Hopper Barges, Multi-role vessesl, work boats

NORTH STAR SHIPPING. Fleet: ERRV, PSV, ROV Survey

MARITIME CRAFT SERVICES (MCS). Fleet: Fast Crew Supplier (FCS), multicats, shoal busters, tugs, dive support vessels.

SEALION. Fleet: Platform Supply Vessels (PSV), ROV Support, Well Testing Vessels, Diving Support Vessels (DSV), Construction Support and AHTS.

SUBSEA7. Fleet: Deepwater Construction Support ships, subsea construction ships, Rigid and Flaxible Pipelay ships, diving support vessels, heavy construction ships.

UK Dredging (UKD). Fleet: Trailing suction hopper dredgers, grab hopper dredger, multicats.